Benjamin benas and josef flogel



(ModeL) B. BENAS & J. FLOGBL.

DECORATING GLASSWARE.

Patented Ma 9, 1882.

INVENTOR ATTORNEYS.

c n m h s n m a w w n a m i n m i n a n P N To all whom it may concern:

UNITED STATES PATENT OFFICE.

BENJAMIN BENAS AND JOSEF FLOGEL, OF BROOKLYN, NEW YORK.

DECORATING GLA'SSWA RE.

SPECIFICATION forming part of Letters Patent No. 257,643, dated May 9, 1882,

Application filed October 6, 1831. (Model) Be it known that we, BENJAMIN BENAS and JOSEF FL'tiGEL, both ofBrooklyn, in the county of Kings and State ofNew Yoi k, have invented certain new and-useful Improvements in Decorating Glassware, of which the following is a specification.

The object of our invention is to furnish an improved process of frosting glassware and of decorating the same in such a manner that entirely new elfects are obtained. The invention consists in applying to the surface of the articles to be decorated, by means of a suitable flux, a'properly granulated composition, consisting of red lead, quartz, boric acid, and potash, with a small addition 6t bismuth, and submitting the article in a muffle to the fusing temperature of the composition. The composition may also be colcred with metallic oxidesand used in the form of a powder for painting ornamental designs upon a part of the surface of the article, the colored portions being finally burned in one fire with the frosted portions.

in the accompanying drawings, Figure 1 represents a side view of a' glass globe manufactured according to our improved process, and Fig. 2 a detail Vertical transverse section of the same on line a; .r, Fig. 1.

Similar letters of reference indicate correspondin g parts.

In carrying out our invention a flint-glass object, A--sneh asa lamp globe, shade, or other article-is covered on its entire surface or on such parts only as are intended to be brought out in frosted character, by means of a suitable flux, with a layer, B, of a granulated composition which is made of a mixture of seven parts of red lead, five parts of quartz, six parts of boric acid, twoparts of potash, and one and one-half part of bismuth. The composition may be either plain or colored, so that thus any desired tint can be produced. I t is granulated by any suitable apparatus, apart/of the same being ground to an impalpable powder and colored with metallic oxides, to be used for painting upon the nnt'rosted parts of the articles of glass landscapes, flowers, and any other designs,O. The article is then placed in a muffle and exposed to the heat of a decorating-furnace until the fusion of thecompocovered. articles of any desired color and tint may be sition employed for decorating the surface takes place. The rear side of the painted portions may be covered by an enamel, D, made of the same material as the composition, so

that thus a variegated effect is produced, as

thearticles have partly a frosted surface and partly'a smoothly-decorated surface, which is transparent to the light, but opaque when seen in daylight.

One advantage of our improved process is that the laying on of the granulated part of the surface can be doneat one time and the rest at another time until the entire surface is Another advantage is that frosted produced by coloring the composition accordingly. The artist can .thereby produce a variety of effects which cannot be produced by the old processes for frosting glassware. The main advantage, however, is that the entire article, alter bein g decorated by the granulated and colored compositions and by the layer of enamel at the hack, can be completed in one fire without injury to any-part thereof, as all the compositions used in the decorating process are of the same material and will fuse at the same degree of heat.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. A composition for decorating the surface of glassware, consisting of red lead, granulated quartz, boric acid, potash, and bismuth, substantially as described.

2. Themethod herein described of decorating the surface of glassware, consisting of the application with a suitable flux of a layer 0t composition of red lead, granulated quartz, horic acid, potash, and bismuth, then placing it in a muffle and exposingitto the heat of a furnace until the fusion of the composition takes place, substantially as described.

3. The process herein described of decorating the surface of glassware, consisting of first frosting a portion of it with a colored composition of red lead, granulated quartz, boric acid, potash, and bismuth, and, second, of painting the unfrosted portions of it with apart of like composition ground to an impalpable powder and colored with metallic oxide, and then exposing tothe heat of a decoratirig-furnace un- IOC til the fusion of the composition takes place, our invention we have signed our names, in to substantially as described. presence of two witnesses, this 23d day of Sep- 4. As an article of manufacture, glassware tcmber, 1881. having portions of its surface frosted with com- BENJAMIN BENAS. 5 pos1t1on as herein descrlbed and unfrosted portionspainted with like composition ground JOSEF and colored with metallic oxide, substantially Witnesses-z as described. PAUL GOEPEL,

In testimony that we claim the foregoin g. as CARL KARP. 

